<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    li {
      list-style: none;
    }

    .toolbar {
      position: fixed;
      bottom: 0;
      left: 0;
      /* 百分比布局  流式布局 */
      width: 100%;
      height: 50px;
      /* ps */
      /* background-color: pink; */
      border-top: 1px solid #ccc;
      box-sizing: border-box;
    }

    .toolbar li {
      float: left;
      width: 20%;
      height: 50px;
    }

    .toolbar li a {
      display: block;
      height: 50px;
      text-align: center;
    }

    .toolbar li img {
      height: 100%;
    }
  </style>
</head>

<body>
  <div class="toolbar">
    <ul>
      <li>
        <a href="#">
          <img src="./images/1.png" alt="">
        </a>
      </li>
      <li>
        <a href="#">
          <img src="./images/2.png" alt="">
        </a>
      </li>
      <li>
        <a href="#">
          <img src="./images/3.png" alt="">
        </a>
      </li>
      <li>
        <a href="#">
          <img src="./images/4.png" alt="">
        </a>
      </li>
      <li>
        <a href="#">
          <img src="./images/5.png" alt="">
        </a>
      </li>
    </ul>
  </div>
</body>

</html>